极简单非谓语动词问题After shopping all day in crowded department stores, Kathy and Erica were as tired as【 】 a marathon答案给的if they had run 但是为什么having run 不成……

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极简单非谓语动词问题After shopping all day in crowded department stores, Kathy and Erica were as tired as【 】 a marathon答案给的if they had run 但是为什么having run 不成……

极简单非谓语动词问题After shopping all day in crowded department stores, Kathy and Erica were as tired as【 】 a marathon答案给的if they had run 但是为什么having run 不成……
极简单非谓语动词问题
After shopping all day in crowded department stores, Kathy and Erica were as tired as【 】 a marathon
答案给的if they had run 但是为什么having run 不成……

极简单非谓语动词问题After shopping all day in crowded department stores, Kathy and Erica were as tired as【 】 a marathon答案给的if they had run 但是为什么having run 不成……
as if引导的虚拟语气.用过去完成时表示过去并没有做的事情（在此是好像跑过马拉松一样,但其实他们没跑）

前面的after表明，逛街已经结束。 所以要用过去完成时

极简单非谓语动词问题After shopping all day in crowded department stores, Kathy and Erica were as tired as【 】 a marathon答案给的if they had run 但是为什么having run 不成…… 非谓语动词的简单解释 英语谓语动词和非动词谓语问题~四种谓语动词的用法!非谓语动词用法! 关于英语非谓语的问题These books must be returned to the library after being read谓语动词是return,非谓语动词应该是发生在return之前,为什么是being read 而不是having being read. 组个谓语动词和非谓语动词 两个最简单的句子 问下关于非谓语动词的简单问题现在分词是非谓语动词的一种对吗?可是非谓语动词不是可以充当主语嘛?为什么我在其它书上看到现在分词不能做主语呢? 非谓语动词是啥啊 非谓语动词练习 非谓语动词是什么意思? 非谓语动词是什么意思? 高中英语非谓语动词, 非谓语动词语法 初中英语----非谓语动词 非谓语动词讲解 非谓语动词详解 非谓语动词做宾补 什么是谓语动词,非谓语动词, 英语初学者的问题什么是“情态动词”、“be动词”、“助动词”、“完成形式”、“波动形式”“谓语动词”、“非谓语动词”?